What was found
WXR SYS EICAS STATUS WXR DISPLAY IS NOT PRESENT WHEN WXR SELECTED ON EFIS CONTROL PAN EL. FIM TASK REF : FIM TASK REFERENCE NOT FOUND CMC MSG# 3444001 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: CRUISE NARRATIVE: WXR TRANSCEIVER (LEFT) CMC MSG# 3444032 FLIGHT STATUS: I INTERMITTENCE CODE: I PH: CLIMB NARRATIVE: WXR TRANSCEIVER (RIGHT) CMC MSG# 3444031 FLIGHT STATUS: A INTERMITTENCE CODE: I PH: CLIMB NARRATIVE: WXR TRANSCEIVER (LEFT) UNIT, DRIVE PED OFF 99-3443-9-0002 8120 ON 0000 UNIT, DRIVE PED OFF 99-3443-9-0002 8120 ON 99-3443-9-0002 9429 TRANSCEIVER, WX OFF 19-3440-9-0001 2765 ON 0000 TRANSCEIVER, WX OFF 19-3440-9-0001 2765 ON 19-3440-9-0001 2776 FOUND ANTENNA DRIVE UNIT AND LEFT WXR FAULTING, REMOVED AND REPLACED LEFT WXR TRANSCEIVER UNIT AND ANTENNA DRIVE UNIT, PERFORMED L & R WXR OPERATIONAL TEST, TEST PASSD, NO FAULTS PRESENT. REF AMM 34-43-02-400-801, AMM 34-43-03-400-801, AMM 34-43-02.